Heat and mass transfer analysis and modeling in unsaturated ground soils for buried tube systems

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Abstract

The performance of a single pipe carrying warm fluid buried in a medium wet sand is described in this paper. A finite element model is used to analyze the heat and moisture movement in a pipe-soil cross-section perpendicular to pipe length. System variables included are: pipe diameter, initial soil moisture concentration and temperature, and fluid-tube interface temperature. The time varying soil moisture concentrations and temperatures are graphically presented. Soil moisture profiles evolve at a slower rate than the temperature distribution functions. For fluid-tube interface temperature of 32°C and initial soil moisture concentration of 30%, moisture in pipe velocity will fall below 25% after 48 h.

Original languageEnglish (US)
Pages (from-to)179-193
Number of pages15
JournalEnergy in Agriculture
Volume6
Issue number3
DOIs
Publication statusPublished - Jan 1 1987

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All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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